fix(desktop): 补回报告页剥离时漏搬的 PDF 导出与完成系统通知

759483b 把报告页剥成纯启动器时，Word/Markdown 导出搬去了运行页，但漏了两个：
printReportHtml(前端打印出 PDF，CJK 零字体依赖)和 notify(完成弹系统通知)
外部调用点归零，成了被孤立的活功能。

- 运行页报告正文面板补 PDF 按钮：previewRef 抓已渲染 DOM 送打印视图，
  与剥离前同一条路径。
- 完成通知挪进 attachRun 的 token 流 done 回调并加 label 参数：原先只有
  报告会通知，但「跑几分钟、人早切走了」对编排任务一样成立，且 attachRun
  是所有运行的唯一汇合点，放这儿不会再漂移。恢复的待审任务也带主题。

验证：tsc 干净、68 个 vitest 全过、两函数调用点恢复非零。
⚠️ 未实机点验(需登录态)：PDF 按钮实际点击出打印视图、通知实际弹出，
下次起服务后补验。

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

sundynix-desktop/frontend/src/views/RunsView.tsx

@@ -1,5 +1,5 @@
-import { useCallback, useEffect, useState } from "react";
-import { Activity, FileText, FileType2, FileCode, History, Users, Wrench } from "lucide-react";
+import { useCallback, useEffect, useRef, useState } from "react";
+import { Activity, FileText, FileType2, FileCode, Printer, History, Users, Wrench } from "lucide-react";
 import { ExecTrace } from "../components/ExecTrace";
 import { TeamView } from "../components/TeamView";
 import { OfficeView } from "../components/OfficeView";
@@ -9,7 +9,7 @@ import { extractChartBlocks, hasChart } from "../lib/chartspec";
 import { deriveNodes, isMultiAgent, isReportRun, emptyRun, type RunState } from "../lib/run";
 import { listRuns, taskEval, runReplay, reportExportUrl, reportFilename, type RunSummary, type EvalResult } from "../lib/api";
 import { Tabs, Panel, Dot, Badge, Button, EmptyState, useToast, cn, type TabDef } from "../ui";
-import { saveReportAs } from "../lib/desktop";
+import { saveReportAs, printReportHtml } from "../lib/desktop";
 
 type DetailTab = "trace" | "team" | "tools" | "eval";
 
@@ -37,6 +37,7 @@ export function RunsView({ run, focusTaskId }: { run: RunState; focusTaskId?: st
   const [evalRes, setEvalRes] = useState<EvalResult | null>(null);
   const [tab, setTab] = useState<DetailTab>("trace");
   const [teamSkin, setTeamSkin] = useState<"office" | "board">("office"); // 团队视图皮肤：卡通办公室 / 卡片看板
+  const previewRef = useRef<HTMLDivElement>(null); // 导出 PDF 要拿已渲染的正文 DOM
 
   useEffect(() => {
     let alive = true;
@@ -88,6 +89,17 @@ export function RunsView({ run, focusTaskId }: { run: RunState; focusTaskId?: st
       toast.push("error", (e as Error).message);
     }
   };
+  // 导出 PDF：把预览到的正文(已渲染 HTML)送进打印视图（CJK 零字体依赖，故走前端打印而非后端渲染）。
+  const exportPdf = () => {
+    const html = previewRef.current?.innerHTML;
+    if (!html) {
+      toast.push("error", "暂无报告正文可导出");
+      return;
+    }
+    if (!printReportHtml(curTopic || curId, html)) {
+      toast.push("error", "打印窗口被拦截，请允许弹出窗口后重试");
+    }
+  };
   const nodes = deriveNodes(cur.exec);
   // 工具调用面板纳入专家派发：MCP 工具(kind=tool)与多智能体协调里的子智能体派发(kind=agent)都是「调用」。
   const calls = nodes.filter((n) => n.kind === "tool" || n.kind === "agent");
@@ -201,6 +213,9 @@ export function RunsView({ run, focusTaskId }: { run: RunState; focusTaskId?: st
                 <Button icon={FileType2} onClick={() => exportReport("docx")}>
                   Word
                 </Button>
+                <Button variant="ghost" icon={Printer} onClick={exportPdf}>
+                  PDF
+                </Button>
                 <Button variant="ghost" icon={FileCode} onClick={() => exportReport("md")}>
                   Markdown
                 </Button>
@@ -209,7 +224,9 @@ export function RunsView({ run, focusTaskId }: { run: RunState; focusTaskId?: st
           }
         >
           {cur.output ? (
-            <OutputView output={cur.output} />
+            <div ref={previewRef}>
+              <OutputView output={cur.output} />
+            </div>
           ) : (
             <EmptyState icon={Activity} title="尚无输出" desc="选择一次运行查看结果；或发起新运行，回复会在这里逐字呈现。" />
           )}